{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["engineering feature", "application", "process parameter", "enabling technology", "manufacturing standard", "concept or principle"], "input": "A new innovation in mask-image-projection based on the stereolithography process has been developed to produce objects with digital materials ."}
{"engineering feature": [], "application": [], "process parameter": [], "enabling technology": [], "manufacturing standard": [], "concept or principle": ["mask-image-projection", "process", "digital materials"]}